<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>3d加载效果</title>
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="pyramid-loader">
      <div class="wrapper">
        <span class="side side1"></span>
        <span class="side side2"></span>
        <span class="side side3"></span>
        <span class="side side4"></span>
        <span class="shadow"></span>
      </div>
    </div>
  </body>
</html>
